With our data-based products and services, residents gain transparency about their energy consumption and can thus save energy, costs and CO2. This in turn helps the owner to increase energy efficiency and thus the value of the property. Residents and owners thus actively contribute to climate protection together. ista, with over 5,500 employees in 22 countries, aims to be the partner for digitalisation and smart solutions for owners and occupants of buildings. Water meterHeat metersHeat cost allocatorsService charge billingEnergy managementBuilding servicesEnergy solutions